At EMC, Marriage Requires Investment

EMC Corp.'s marriage to VMware Inc. has stood the test of time so far. But outside pressure will put the tech giant on the spot to justify the continued relationship.

For EMC's part, it may need to prove its devotion with cold, hard cash. Elliott Management has reportedly taken a stake of more than $1 billion in EMC. That would put the activist hedge fund among its top five institutional holders, putting it in position to press for...